Toyota TUNDRA 2009 Manual page 216

2-4. Using other driving systems
The distance and buzzer
n When a sensor detects an obstacle.
The buzzer sounds.
Back sensors
Rear corner sensors
218
Distance
Zone
shown as
in in. (mm)
Approximately
Far 70.9—45.3
(1800—1150)
Approximately
Mid
45.3—33.5
(1150—850)
Approximately
Near
33.5 (850) or
less
Distance
Zone
shown as
in in. (mm)
Approximately
Far
33.5—20.5
(850—520)
Approximately
Mid 20.5—15.7
(520—400)
Approximately
Near
15.7 (400) or
less
Indicator
and buzzer
Intermittent
Fast
intermittent
Continuous
Indicator
and buzzer
Intermittent
Fast
intermittent
Continuous